Symfony is a web application framework for PHP5 project and implimentations.

It aims to speed up the creation and maintenance of web applications, and to replace the repetitive coding tasks by power, control and pleasure.

The very small number of prerequisites make symfony easy to install on any configuration; you just need Unix or Windows with a web server and PHP 5 installed. It is compatible with almost every database system. In addition, it has a very small overhead, so the benefits of the framework don t come at the cost of an increase of hosting costs.

Using symfony is so natural and easy for people used to PHP and the design patterns of Internet applications that the learning curve is reduced to less than a day. The clean design and code readability will keep your delays short. Developers can apply agile development principles (such as DRY, KISS or the XP philosophy) and focus on applicative logic without losing time to write endless XML configuration files.

Symfony is aimed at building robust applications in an enterprise context. This means that you have full control over the configuration: from the directory structure to the foreign libraries, almost everything can be customized. To match your enterprise s development guidelines, symfony is bundled with additional tools helping you to test, debug and document your project and implimentation.

Last but not least, by choosing symfony you get the benefits of an active open-source community. It is entirely free and published under the MIT license.

Symfony is sponsored by Sensio, a French Web Agency.

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It provides an architecture, components and tools for developers to build complex web applications faster. Choosing symfony allows you to release your applications earlier, host and scale them without problem, and maintain them over time with no surprise. [1]
Symfony is based on experience. It does not reinvent the wheel: it uses most of the best practices of web development and integrates some great third-party libraries.
Symfony has low performance overheads when dealing with an environment that supports a PHP accelerator.

PHP FRAMEWORK

In order to better understand what a framework is, let’s leave the world of computer science for a moment and imagine a mountaineering adventure. Developing an application is very similar to climbing a rock wall: you are at the bottom (you have an application to be created) and you need to reach the summit (and be pleased with the achievement of designing an application that works perfectly.)

DEVELOPMENT ROADMAP

The upcoming new release version of Symfony will include new features such as: [4] [5]
A new form generation framework, first introduced in version 1.2
A new admin generator (referred to as scaffolding in Rails) which makes use of the new form framework and is no longer implemented as a helper.
Object relationship mapping declared in a separate plug-in, rather than being integrated into the ORM

CONCLUSION

We have described about Symfony. Symfony is a web application framework written in PHP. Symfony is aimed at building robust applications in an enterprise context, and aims to give developers full control over the configuration: from the directory structure to the foreign libraries, almost everything can be customized. To match enterprise development guidelines, Symfony is bundled with additional tools to help developers test, debug and document project and implimentations.